Sleeve for reeling up and/or wet-treating yarn or thread

ABSTRACT

A textile sleeve for reeling up and for wet-treating thread or yarn, the sleeve being cylindrical or conical and having end rings and spaced intermediate rings, with a row of connecting webs between the rings of each pair of adjacent rings. The webs of each row are inclined to the axial direction of the sleeve and always at least two webs of each row are inclined in regular sequence in opposite sense.

O Umted States Patent [151 3,647,156

Henning 1 Mar. 7, 1972 [s41- SLEEVE FOR REELING UP AND/0R [56] References Cited WET-TREATING YARN 0R THREAD UNITED STATES PATENTS [72] lnventor: Walter Hennlng, Hoengen near Aachen,

Germany 2,844,333 7/l958 Davidson ..242/l l8.ll 3,465,984 9/1969 Tigges et al ..242/l I8. [73] Assrgnee: Messrs. Jos. Zrmmermann, Aachen, Germany Primary Examiner-George F. Mautz [22] Filed; N 20, 1969 Attorney-Mason, Fenwick & Lawrence A textile sleeve for reeling up and for wet-treating thread or [30] Foreign Application Priority Data yarn, the sleeve being cylindrical or conical and having end Nov. 25, 1968 Germany ..P l8 10 774.9 rings and spaced intermediate rings, with a row of connecting webs between the rings of each pair of adjacent rings. The [52] U.S.C| ..242/ll8.l webs of each row are inclined to the axial direction of the [5 11 Ill. Cl. .1365]! 75/20, B65h 75/10 sleeve and always at least two webs of each row are inclined in 0f 18.1, l 18.11, i 18.2; regular equence in opposite ense 8 Claims, 4 Drawing Figures MAW/Willi SLEEVE FOR REELING UP AND/OR WET-TREATING YARN OR THREAD FIELD OF THE INVENTION The invention relates to a sleeve, more particularly of plastics material, for reeling up and/or wet treatment of thread or yarn, the sleeve having end rings, intermediate rings between the end rings, and webs interconnecting the intermediate rings and connecting them to the end rings.

Such sleeves are either cylindrical or conical in shape. In some cases, the threads or yarns are reeled up parallel, but usually they are cross wound on the sleeves. In order to meet the requirements of use, the sleeves must form a sufficient support for the inner layers of the yarn or thread during reeling up and reeling off. In addition, during wet treatment, the sleeves must permit flow of treatment liquid from their inside through the thread or yarn reel towards the outside and vice versa. Also, the sleeves must be sufficiently strong to withstand axial and radial stresses to which they are exposed in use.

DESCRIPTION OF THE PRIOR ART There is known a plastics sleeve for reeling up and wet treatment of threads or yarns which has end rings, intermediate rings, and webs interconnecting the intermediate rings and connecting them to the end rings. In this known sleeve, the webs extend axially and the webs of all rows of webs coincide in position. Although this known sleeve meets some of the requirements, it leaves much to be desired in other respects.

In the known sleeve, the intermediate rings and the connecting webs are comparatively wide and thick walled, to

meet the working stresses. However, this has a disadvantageous effect with regard to the size of the openings between the webs and intermediate rings or end rings, which openings permit the treatment fluid to pass. Furthermore, this construction involves the use of much material, which affects manufacturing costs.

In the known sleeve, the lateral distances between the webs of the individual rows of webs are comparatively large. In consequence, the innermost layers of thread or yarn wound on the sleeve, which layers project after the manner of chords from one top of a web to the next top, extend with their intermediate portions into the interior of the sleeve, this being a disadvantage both in reeling up and in wet treatment.

If the known sleeve is wound by crosswinding, the inner layers of the yarn or thread form a rather acute angle relative to the webs. This is not favorable for the support of the yarn or thread by the webs.

SUMMARY OF THE INVENTION The object of the invention is to provide a sleeve, and more particularly a plastic sleeve, for reeling up and wet treatment of threads or yarns, in which the drawbacks of known sleeves are avoided and which meets all operational requirements.

According to the invention, there is provided a sleeve for reeling up and/or wet-treating yarn or thread the sleeve having a shell and comprising end rings, spaced intermediate rings between the end rings, and rows of webs connecting the intermediate rings with each other and with the end rings, the webs being inclined to the axial direction and always at least two webs of each row being inclined in regular sequence in opposite sense.

The inclined arrangement of the webs confers good strength properties on the sleeve, because both axial and radial compressive stresses are transferred by the webs (unless absorbed by them) to the intermediate rings and these become tensile forces. Being annular, the intermediate rings can absorb large tensile forces. Thus the webs and intermediate rings may be comparatively narrow and thin,and thus in turn there are obtained large apertures for flow of treatment fluid between the webs and intermediate rings, as well as savings in material.

Due to the inclined arrangement of the webs, the distance between the supports formed thereby for the inner layers of the thread or yarn can be reduced. This prevents penetration of the yarn or thread to the inside of the sleeve.

The inclined arrangement of the webs also has the effect that, with crosswinding, the inner layers of the yarn or thread cross the webs at a comparatively large angle, which is of advantage in supporting the yarn or thread.

The inclined arrangement of the webs has also the advantage with regard to flow of treatment fluid in that it causes substantially uniform distribution of flow along the whole surface of the sleeve.

According to another feature of the invention, the webs of consecutive rows of webs are in mirror image arrangement. This configuration provides uniform conditions with regard to strength, to thread or yarn support, and to flow of treatment fluid, at all points of the sleeve.

The invention also provides that the webs of each row may be arranged in zigzag form, with each web contacting at its ends the adjacent end of an adjacent web in the row. This construction is particularly advantageous both with regard to the function of the sleeve and to its manufacture.

When a sleeve is cross wound with yarn or thread, the curved portions of the inner layers, arranged at the reversing points at the sleeve ends, tend to slide towards the center of the sleeve. To some extent, this movement is acceptable and may even be of advantage in the wet treatment, in that thereby buildup of the yarn or thread layers is such that they leave a small gap with the periphery of the sleeve in the direction of the sleeve ends. However, a larger movement is undesirable, as it leads to nonuniform winding on the sleeve.

With a sleeve according to the invention, as in the known sleeve, movement of the inner layers is inhibited by the parts of the intermediate rings located between the webs, the reason being that the intermediate rings project radially beyond the chord extending between the spaced parts of adjacent webs; this projection forms an abutment or support for the inner layers.

To increase this movement-inhibiting effect, various means may be adopted in accordance with the invention. Thus the distance between the end rings and the adjacent intermediate rings may be less than the spacing between adjacent intermediate rings. Alternatively an additional intermediate ring may be mounted between the end rings and the intermediate rings adjacent thereto. Furthen'nore crosswebs may be provided between the webs of rows located between the end rings and the intermediate rings adjacent thereto. These features may also be combined. In accordance therewith the sleeve may be so constructed that an additional intermediate ring is arranged between one end ring and the adjacent intermediate ring, and crosswebs are located between the webs of the row of webs, arranged between the other end ring and the adjacent intermediate ring.

In a conical sleeve, the tendency of the parts of yarn or thread located at the reversing points of the innermost layers to move axially of the sleeve is particularly great at the narrow end of the sleeve. It is therefore necessary to provide particularly effective means at this end of the sleeve for preventing movement of those parts of the thread or yarn. Thus in accordance with the invention, in a conical sleeve, the row of webs located between the smaller end ring and the adjacent intermediate ring may have crosswebs. The arrangement, number and configuration of the crosswebs may be adapted-to the conditions of each case.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be further described by way of example, with reference to the accompanying drawings in which:

FIG. 1 is a side elevation of a first embodiment;

FIG. 2 is a cross section on line A-B of FIG. 1;

FIG. 3 is an elevation of a second embodiment; and

FIG. 4 is a cross section on line C-D of FIG. 3.

DESCRIPTION OF PREFERRED EMBODIMENTS The first embodiment, shown in FIGS. 1 and 2, relates to a cylindrical sleeve, while the embodiment shown in FIGS. 3 and 4 relates to a conical sleeve.

In both embodiments, the sleeves are of plastics material, namely polypropylene, and they are extruded.

The sleeve of FIGS. 1 and 2 has end rings and 11, intermediate rings 12, 12a, 12b between the end rings 10, 11, and webs 13, 13a, 13b, connecting the intermediate rings with each other and with the end rings 10, I].

The intermediate rings 12, 12a, 12b are equidistantly spaced. On the other hand, the distance between the end rings 10, l1 and the adjacent intermediate rings 12a and 12b is only half as large as the distance between the intermediate rings. The intermediate rings are of substantially square cross section.

Between any two adjacent intermediate rings 12, 12a, 12b, there is a row of webs formed by individual webs 13. The webs 13 of each row are arranged in zigzag form as shown and each web 13 contacts with its ends the adjacent end of an adjacent web. The webs 13 of consecutive rows are arranged in mirror image, as seen in FIG. 1.

A further row of webs is located between the end rings 10, 11 and the adjacent intermediate rings 12a, 12b respectively. These two rows of webs are formed by the webs 13a, 13b, arranged in mirror image of the webs 13 of the consecutive row of webs, but having a length of only half thereof. In consequence, the webs 13a and the webs 13b are in contact only at their ends next the intermediate rings 12a, 12b, respectively.

All the webs 13, 13a, 13b are of trapezium-shaped cross section, tapering from the inner surface of the shell to its outer surface, FIG. 2.

In each row of webs l3 triangular openings 14 exist between the webs l3 and the intermediate rings 12, 12a, 12b. Further, between the webs 13a, the and ring 10 and the intermediate ring 120, there are partly triangular, partly trapezium-shaped, openings 14a and 144, ,respectively, and between the webs 1312, the end ring 11 and the intermediate ring 12b, there are partly triangular openings 14b and partly trapezium-shaped openings l4b The sleeve shown in FIGS. 3 and 4 is conical and corresponds in construction substantially to the sleeve shown in FIGS. 1 and 2. It has end rings 15 and 16, of which the end ring 15 is of smaller diameter than the end ring 16. Between these end rings, there are spaced intermediate rings 17, 17a, 17b, the diameter of which decreases, in accordance with the shape of the sleeve, from the end ring 16 to the end ring 15. The sleeve has webs 17, 17a, 17b which interconnect the intermediate rings 17, 17a, 17b, and connect them to the end rings 15 and 16.

The intermediate rings 17, 17a, 17b are equidistantly spaced. The distance between the end rings 15, 16 and the adjacent intermediate rings 17a, 17b respectively is equal to the distance between the intermediate rings 17, 17a, 17b. The intermediate rings are of substantially square cross section.

Between any two adjacent intermediate rings 17, 17a, 17b is a row of webs 18. In addition, between the end rings 15, 16 and the adjacent intermediate rings 17a, 1712 respectively is a row of webs 18a and 18b. The webs 18, 18a and 18b of all rows are in zigzag formation as shown, with each web in contact at its ends with the adjacent end of a neighboring web. The webs of adjacent rows are in mirror image, also as shown.

The distances between the webs 18 or 18a of a row in the direction towards the narrower end ring 15 are slightly smaller than the distances between the webs 18 or 18b of the preceding row. Both the webs 18 and the webs 18a, 18b are of trapezium-shaped cross section and taper from the inside of the sleeve towards the outside, see FIG. 4.

Between the end ring 16 and the adjacent intermediate ring, there is an additional intermediate ring 19. This intermediate ring 19 is of narrower width than the intermediate rings 17,

Further, crosswebs 20 are provided between the webs 18a of the row between the end ring 15 and the adjacent intermediate ring 17a. One crossweb 20 extends between the webs of every pair of adjacent webs 180, at a point where the spacing between the adjacent webs is comparatively large, as seen in FIG. 3, and in consequence the crosswebs 20 are located alternately near the end ring 15 and the intermediate ring 174. The cross section of the crosswebs 20 corresponds to that of the webs 18a and their outer edges are located in the outer periphery of the sleeve.

In each row of webs 18 there are triangular openings 21 between the webs and the intermediate rings 17, 17a, 17b. Further, between the webs 18a and the crosswebs 20, the end ring 15 and/or the intermediate ring 17a, there are partly triangular openings Zla, and partly trapezium-shaped openings 21a Between the webs 18b, the end ring 16 and the intermediate ring 19, there are partly triangular openings 21b 1 and partly trapezium-shaped openings 21b,, and between the webs 18b, the intermediate ring 17b and the intermediate ring 19, there are further triangular openings 21b,, and further trapezium-shaped openings 21b.,.

What I claim is:

1. A rigid sleeve for reeling up and/or wet treating yarn or thread, the sleeve having a shell comprising end rings, spaced intermediate rings between the end rings, and rows of webs formed of straight members rigidly connecting the intermediate rings with each other and with the end rings, the straight members having one end connected to one of two adjacent rings and the other end connected to the other of said two adjacent rings and inclined along their whole lengths to the longitudinal axis of the shell with at least two adjacent webs of each row being oppositely inclined in regular sequence.

2. A rigid sleeve according to claim I, wherein the webs of consecutive rows are disposed in mirror image.

3. A rigid sleeve according to claim 1, wherein the webs of each row are arranged in zigzag form each web contacting at each end the end of an adjacent web.

4. A rigid sleeve according to claim 1, wherein the distance between the end rings and the intermediate rings adjacent thereto is less than the distance between adjacent intermediate rings.

5. A rigid sleeve according to claim I, wherein an additional ring intersects the row of webs adjacent an end ring.

6. A rigid sleeve according to claim 5, wherein crosswebs are located between the webs of the rows located between one of the end rings and its adjacent intermediate ring.

7. A rigid sleeve according to claim 1, wherein an additional ring intersects the row of webs adjacent one end ring, and crosswebs are located between the webs of the row between the other end ring and the intermediate ring adjacent thereto.

8. A rigid sleeve according to claim 7, wherein one end ring is of smaller diameter than the other end ring, the row of webs between the smaller end ring and the adjacent intermediate ring being provided with crosswebs. 

1. A rigid sleeve for reeling up and/or wet treating yarn or thread, the sleeve having a shell comprising end rings, spaced intermediate rings between the end rings, and rows of webs formed of straight members rigidly connecting the intermediate rings with each other and with the end rings, the straight members having one end connected to one of two adjacent rings and the other end connected to the other of said two adjacent rings and inclined along their whole lengths to the longitudinal axis of the shell with at least two adjacent webs of each row being oppositely inclined in regular sequence.
 2. A rigid sleeve according to claim 1, wherein the webs of consecutive rows are disposed in mirror image.
 3. A rigid sleeve according to claim 1, wherein the webs of each row are arranged in zigzag form each web contacting at each end the end of an adjacent web.
 4. A rigid sleeve according to claim 1, wherein the distance between the end rings and the intermediate rings adjacent thereto is less than the distance between adjacent intermediate rings.
 5. A rigid sleeve according to claim 1, wherein an additional ring intersects the row of webs adjacent an end ring.
 6. A rigid sleeve according to claim 5, wherein crosswebs are located between the webs of the rows located between one of the end rings and its adjacent intermediate ring.
 7. A rigid sleeve according to claim 1, wherein an additional ring intersects the row of webs adjacent one end ring, and crosswebs are located between the webs of the row between the other end ring and the intermediate rinG adjacent thereto.
 8. A rigid sleeve according to claim 7, wherein one end ring is of smaller diameter than the other end ring, the row of webs between the smaller end ring and the adjacent intermediate ring being provided with crosswebs. 